Pattern #100! A black classic knit-looking pattern.
Source Factorio.us Collective
Sort of reminds me of those old house wallpapers.
Source Tish
This yellow background consists of a pattern of glossy gold buttons arranged in polka dot style on a seamless texture. Here's a pale yellow background pattern. Feel free to use it for your needs!
Source V. Hartikainen
The rectangular tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
This was formed by distorting an image of a background on Pixabay.
Source Firkin
Simple combination of stripy squares with their negatively coloured counterparts
Source Firkin
A nice and simple white rotated tile pattern.
Source Another One
Not so subtle. These tileable wood patterns are very useful.
Source Elemis
Don’t look at this one too long if you’re high on something.
Source Luuk van Baars
Embossed lines and squares with subtle highlights.
Source Alex Parker
Background Wall, Art Abstract, Block Well & CC0 texture.
Source Ractapopulous
Small gradient crosses inside 45-degree boxes, or bigger crosses if you will.
Source Wassim
This was formed by distorting an image of a background on Pixabay.
Source Firkin
A slightly more textured pattern, medium gray. A bit like a potato sack?
Source Bilal Ketab
Hey, you never know when you’ll need a bird pattern, right?
Source Pete Fecteau
Seamless pattern formed from a tile that can be extracted by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
A seamless pattern formed from a square tile. The tile can be retrieved by selecting the rectangle in Inkscape and using shift-alt-I. A version of the original with random colors.
Source Firkin
From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin